Compressor for oxygen generator

Abstract

The compressor comprises a driving mechanism, a first compression mechanism and a second compression mechanism, wherein the first compression mechanism and the second compression mechanism are arranged on the left side and the right side of the driving mechanism. A first positive pressure mechanism and a first negative pressure mechanism are arranged on the first compression mechanism, and a second positive pressure mechanism corresponding to the first positive pressure mechanism and a second negative pressure mechanism corresponding to the first negative pressure mechanism are arranged on the second compression mechanism. Positive pressure pistons are arranged in the first positive pressure mechanism and the second positive pressure mechanism, and negative pressure pistons are arranged in the first negative pressure mechanism and the second negative pressure mechanism. The manufacturing material density of the positive pressure piston is larger than that of the negative pressure piston, and the mass of the first positive pressure mechanism and the mass of the second positive pressure mechanism are equal to the mass of the first negative pressure mechanism and the mass of the second negative pressure mechanism, so that the mass of the left side, the right side, the front side and the rear side of the compressor for the oxygen generator is balanced. The design purposes of small vibration and low noise are achieved.

Description

Technical Field

[0001] The invention relates to the field of oxygen concentrators, and in particular to a compressor for oxygen concentrators. Background Art

[0002] Existing oxygen generators use the molecular sieve pressure swing adsorption principle to purify the oxygen components in the air to produce high-concentration oxygen. Usually, the pressure of the molecular sieve tower is changed by positive pressure-normal pressure cycle switching (PSA route) to achieve the purpose of adsorption. Some designs will use positive pressure-negative pressure cycle switching (VPSA route). This can greatly improve the adsorption efficiency of the molecular sieve, and the same oxygen production capacity can save more than 30% energy.

[0003] However, with this design, since the positive pressure mechanism and the negative pressure mechanism share a set of eccentric shafts, and the air flow capacity of the positive pressure mechanism and the negative pressure mechanism is inconsistent, the cylinder diameters of the positive pressure mechanism and the negative pressure mechanism are different, which leads to inconsistent masses of the positive pressure mechanism and the negative pressure mechanism, resulting in the inability to offset the dynamic balance of the overall mechanism. Summary of the invention

[0004] The main purpose of the present invention is to provide a compressor for an oxygen concentrator, which is made of materials with different densities to respectively make a positive-pressure piston and a negative-pressure piston, and in this way balance the masses of the positive-pressure mechanism and the negative-pressure mechanism, so that the overall operation of the machine is smoother and the vibration is less, thereby improving the user experience and the service life of the product.

[0005] The present invention provides a compressor for an oxygen concentrator, comprising a driving mechanism and a first compression mechanism and a second compression mechanism arranged on the left and right sides of the driving mechanism;

[0006] The first compression mechanism is provided with a first positive pressure mechanism and a first negative pressure mechanism, and the second compression mechanism is provided with a second positive pressure mechanism corresponding to the first positive pressure mechanism and a second negative pressure mechanism corresponding to the first negative pressure mechanism;

[0007] Positive pressure pistons are arranged in the first positive pressure mechanism and the second positive pressure mechanism, and negative pressure pistons are arranged in the first negative pressure mechanism and the second negative pressure mechanism. The inner diameters of the first positive pressure mechanism and the second positive pressure mechanism are larger than the inner diameters of the first negative pressure mechanism and the second negative pressure mechanism. The size of the positive pressure piston is consistent with that of the negative pressure piston. The density of the material making the positive pressure piston is larger than the density of the material making the negative pressure piston, and the mass of the first positive pressure mechanism and the second positive pressure mechanism is equal to the mass of the first negative pressure mechanism and the second negative pressure mechanism.

[0008] Preferably, the positive-pressure piston is made of zinc alloy, and the negative-pressure piston is made of aluminum alloy.

[0009] Preferably, it further comprises an eccentric shaft, the driving mechanism is a motor, the output shafts at both ends of the motor are respectively connected to the eccentric wheel, and the positive pressure piston is fixedly connected to the piston and the eccentric wheel.

[0010] Preferably, heat sinks are provided on outer sides of the first positive pressure mechanism and the second positive pressure mechanism.

[0011] Preferably, it further comprises a first air outlet pipe, the air inlet of which is connected to the first positive pressure mechanism and the second positive pressure mechanism respectively.

[0012] Preferably, it further comprises a second air outlet pipe and a third air outlet pipe, and the air inlets of the second air outlet pipe and the third air outlet pipe are connected to the first negative pressure mechanism and the second negative pressure mechanism respectively.

[0013] Preferably, it also includes an air intake pipe, and a first compression mechanism air intake port and a second compression mechanism air intake port are arranged on the sides of the first compression mechanism and the second compression mechanism, and the air outlet of the air intake pipe is respectively connected to the first compression mechanism air intake port and the second compression mechanism air intake port.

[0014] Preferably, the bottom of the first compression mechanism and the bottom of the second compression mechanism are respectively provided with connecting plates, and the connecting plates are provided with connecting plate connecting holes, and the compressor for the oxygen concentrator is fixedly connected to the oxygen concentrator through the connecting plate connecting holes.

[0015] The beneficial effects of the compressor for oxygen concentrator of the present invention are:

[0016] 1. By making the density of the material of the positive-pressure piston greater than the density of the material of the negative-pressure piston and making the mass of the first positive-pressure mechanism and the second positive-pressure mechanism equal to the mass of the first negative-pressure mechanism and the second negative-pressure mechanism, the mass of the left and right sides and the front and back sides of the compressor for the oxygen concentrator is balanced, thereby achieving the design purpose of low vibration and low noise.

[0017] 2. Heat sinks are provided on the outer side surfaces of the first positive pressure mechanism and the second positive pressure mechanism, while heat sinks are not provided on the outer side surfaces of the first negative pressure mechanism and the second negative pressure mechanism, thereby ensuring the heat dissipation effect while reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a compressor for an oxygen concentrator of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the positive pressure piston of the compressor for the oxygen concentrator of the present invention;

[0020] Figure 3 It is a structural schematic diagram of an eccentric wheel of a compressor for an oxygen concentrator of the present invention;

[0021] Numbers in the figure: 1. driving mechanism, 2. first compression mechanism, 3. second compression mechanism, 4. first air outlet pipe, 5. second air outlet pipe, 6. third air outlet pipe, 7. positive pressure piston, 8. eccentric wheel, 21. first positive pressure mechanism, 22. first negative pressure mechanism, 23. connecting plate, 31. second positive pressure mechanism, 32. second negative pressure mechanism, 211. heat sink.

[0022] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0024] Reference Figure 1 , an embodiment of the oxygen concentrator compressor of the present invention is proposed:

[0025] A compressor for an oxygen concentrator comprises a driving mechanism 1, a first air outlet pipe 4, a second air outlet pipe 5, a third air outlet pipe 6, an air inlet pipe, and a first compression mechanism 2 and a second compression mechanism 3 arranged on the left and right sides of the driving mechanism 1. The driving mechanism 1 comprises a motor.

[0026] The first compression mechanism 2 is provided with a first positive pressure mechanism 21 and a first negative pressure mechanism 22 by screw connection, a positive pressure piston 7 is provided in the first positive pressure mechanism 21, a negative pressure piston is provided in the first negative pressure mechanism 22, one end of the motor extends into the first compression mechanism 2 and is connected to the eccentric wheel 8, and the positive pressure piston 7 and the negative pressure piston are fixedly connected to the eccentric wheel 8. The positive pressure piston 7 and the negative pressure piston are driven by the motor to move repeatedly.

[0027] The second compression mechanism 3 is provided with a second positive pressure mechanism 31 and a second negative pressure mechanism 32 by screw connection, a positive pressure piston 7 is provided in the second positive pressure mechanism 31, a negative pressure piston is provided in the second negative pressure mechanism 32, the other end of the motor extends into the second compression mechanism 3 and is connected to the eccentric wheel 8, and the positive pressure piston 7 and the negative pressure piston are fixedly connected to the eccentric wheel 8. The positive pressure piston 7 and the negative pressure piston are driven by the motor to move repeatedly. The air inlet of the first air outlet pipe 4 is connected to the first positive pressure mechanism 21 and the second positive pressure mechanism 31 respectively. The air inlets of the second air outlet pipe 5 and the third air outlet pipe 6 are connected to the first negative pressure mechanism 22 and the second negative pressure mechanism 32 respectively.

[0028] The first compression mechanism 2 and the second compression mechanism 3 are respectively provided with a connecting plate 23 at the bottom, and a connecting plate connecting hole is provided on the connecting plate 23, and the compressor for the oxygen concentrator is fixedly connected to the oxygen concentrator through the connecting plate connecting hole. The first positive pressure mechanism 21 and the second positive pressure mechanism 31 are provided with a heat sink 211 on the outer side, and the heat sink 211 can better ensure the working state of the compressor for the oxygen concentrator.

[0029] The inner diameter of the first positive pressure mechanism 21 and the second positive pressure mechanism 31 is larger than the inner diameter of the first negative pressure mechanism 22 and the second negative pressure mechanism 32. The size of the positive pressure piston 7 is consistent with the size of the negative pressure piston. The positive pressure piston 7 is made of zinc alloy, and the negative pressure piston is made of aluminum alloy. The density of the material of the positive pressure piston 7 is larger than the density of the material of the negative pressure piston, and the mass of the first positive pressure mechanism 21 and the second positive pressure mechanism 31 is equal to the mass of the first negative pressure mechanism 22 and the second negative pressure mechanism 32.

[0030] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A compressor for an oxygen concentrator, characterized in that: It comprises a driving mechanism and a first compression mechanism and a second compression mechanism arranged on the left and right sides of the driving mechanism; The first compression mechanism is provided with a first positive pressure mechanism and a first negative pressure mechanism, and the second compression mechanism is provided with a second positive pressure mechanism corresponding to the first positive pressure mechanism and a second negative pressure mechanism corresponding to the first negative pressure mechanism; Positive pressure pistons are arranged in the first positive pressure mechanism and the second positive pressure mechanism, and negative pressure pistons are arranged in the first negative pressure mechanism and the second negative pressure mechanism. The inner diameters of the first positive pressure mechanism and the second positive pressure mechanism are larger than the inner diameters of the first negative pressure mechanism and the second negative pressure mechanism. The size of the positive pressure piston is consistent with that of the negative pressure piston. The density of the material making the positive pressure piston is larger than the density of the material making the negative pressure piston, and the mass of the first positive pressure mechanism and the second positive pressure mechanism is equal to the mass of the first negative pressure mechanism and the second negative pressure mechanism.

2. The compressor for oxygen concentrator according to claim 1, characterized in that: The positive-pressure piston is made of zinc alloy, and the negative-pressure piston is made of aluminum alloy.

3. The compressor for oxygen concentrator according to claim 1, characterized in that: It also includes an eccentric shaft, the driving mechanism is a motor, the output shafts at both ends of the motor are respectively connected to the eccentric wheel, and the positive pressure piston is fixedly connected to the piston and the eccentric wheel.

4. The compressor for oxygen concentrator according to claim 1, characterized in that: The outer sides of the first positive pressure mechanism and the second positive pressure mechanism are provided with heat sinks.

5. The compressor for oxygen concentrator according to claim 1, characterized in that: It also includes a first air outlet pipe, the air inlet of which is connected to the first positive pressure mechanism and the second positive pressure mechanism respectively.

6. The compressor for oxygen concentrator according to claim 1, characterized in that: It also includes a second air outlet pipeline and a third air outlet pipeline, and the air inlets of the second air outlet pipeline and the third air outlet pipeline are connected to the first negative pressure mechanism and the second negative pressure mechanism respectively.

7. The compressor for oxygen concentrator according to claim 1, characterized in that: It also includes an air intake pipe, wherein a first compression mechanism air intake port and a second compression mechanism air intake port are provided on the sides of the first compression mechanism and the second compression mechanism, and an air outlet of the air intake pipe is respectively connected to the first compression mechanism air intake port and the second compression mechanism air intake port.

8. The compressor for oxygen concentrator according to claim 1, characterized in that: The first compression mechanism and the second compression mechanism are respectively provided with connecting plates at the bottom, and the connecting plates are provided with connecting plate connecting holes, and the compressor for the oxygen concentrator is fixedly connected to the oxygen concentrator through the connecting plate connecting holes.

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